Once you are in the program ... 

• In the left hand-menu, select Tax Tools.
• Select Print Center.
• Then, Print, save or preview this year’s return.  Follow the instructions to pay for the return. 
• Now check the 2018 federal returns box and choose which forms to print out or all worksheets.
• Select View or print forms, then go ahead and print.

 

TurboTax's instructions for printing and accessing current and prior returns are
• For on-line returns, presented here https://ttlc.intuit.com/questions/1900748
• For download/cd prepared returns here https://ttlc.intuit.com/questions/1900639